Drug & Alcohol - The vast majority of drug users are employed, and when they arrive for work, they don't leave their problems at the door. Of the 17.2 million illicit drug users aged 18 or older in 2005, 12.9 million (74.8 percent) were employed either full or part time. Furthermore, research indicates that between 10 and 20 percent of the nation's workers who die on the job test positive for alcohol or other drugs. In fact, industries with the highest rates of drug use are the same as those at a high risk for occupational injuries, such as construction, mining, manufacturing and wholesale.